Aerial attachment device for radiofrequency signal systems



May 11 1926. 1,584,197

G. o. soun-:R

AERIAL ATTACHMENT DEVICE FOR RADIOFREQUENCY SIGNAL SYSTEMS Filed June24, 1922 9 C Y s lgvENTQR I I BY ATTORNEYS Q1 mg# Parenteel Meyv 11,1926.

UNITED STATE s APennini OFFICE.

GERGE OWEN SQUIER, F DRYDEN, MICHIGAN.

Application led June 24,

This invention relates to a device for use in connection with standardtelephone equipment to permit the reception or transmission of radiofrequency signals without the use of other aerial or guide for theradiofrequency signals.

The object of the invention is to provide.

a device of this character which is simple in construction, eiiicient inoperation and economical of manufacture.-

A further object of the invention is to provide a device which willenable the utilization of telephone wires as either an aerial or as aguide in carrier current telephony or telegraphy in connection with aradio frequency receiving or transmitting apparatus wherein no permanentattachment is effected between the radio frequen'c'y signaling apparatusand the telephone system. 4

'A further object ofthe invention is to provide a device of thischaracter wherein the normal operation `of the telephone is 'notinterfered with by the receipt of radio frequencysignals.

A further object of. the invention is to provide a device of thischaracter which is controlled by the relative position between thedevice and a standard transmitter and receiver unit.

Further objects of the invention will appear more fully hereinafter.

The invent-ion consists substantially in the construction, combination,location and relative arrangement of parts, all as will be more fullyhereinafter set forth, as shown in the accompanying ldrawing and finallypointedl outin the appended claims.

Referring to the drawings:

Figure l is a view vin perspective illustrating the attachment of myinvention with the telephone receiver and transmitter assembly'positioned at right angles relative` thereto (at an abnormal position).i

Fi 2is a view in side elevation of the telep one and device 'of myinvention positioned forV`V the reception or transmission of radiofrequency.

Fig. 3 is a diagrammatic view partially 50 in section of the base of thetelephone unit and the deviceof'my invention.

Fig. 4 is a fragmentary sectional view of a slightly modifiedarrangement embodying my invention.

Fig. 5- is a plan view of the same.

The same part is designated `by the same 1922. Serial No. 570,701.

reference character wherever it. occurs throughout the several'views. t

It is among the special purposes of my present invention to provide adevice .of exceedingly simple construction which may be employed topermit the utilization of ordinary telephone Wiresv as an antenna forthe receipt or transmission tof 'radiofrequency signals, or as 'theguide wire for wired wireless, or, as it is sometimes called, carriercurrent 4'telephony or telegraphy, 1n the manner as set forthgenerically in my patents issued to me as follows: No. 930,356, granted.15111.13 1911, No. 980,357 granted Jen. 3, 1911 e. 930,358, grantedJam-3, 1911, No.l 980,359, granted Jan. 3, 1911.

I accomplishthis in accordance with my invention without interference inany way with the telephone system or with the radio frequency signalingsystem, that is, neither System interferes with the normal operation ofthe other, and further, no perma nent connection' is made between thetwo 80 systems.

My invention may be applied in.manyforms and, therefore, I do not desireto be limited or restricted to*` any particular form or arrangement, butI have found a! most artistic arrangement to be that shown in thedrawing and which is selected for the pur pose of illustrating theinvention herein involved.

In the drawing, reference numeral 1 des-v ignates the usual telephonestandard provided with a base 2 at one lend and the receiver ortransmitter at the other end. f The usual telephone hook i supports theusual telephone receiver 5 which receiver 95 is connected to the base 2by the wire cord 6. The usual wire cord (not shown)l eX'- tends fromthe-base to the usual telephone box containing the call bell etc. (.notshown) In the standard telephone equipment thus' 100 described, it iscustomary to cover the bottom ofthe base 2 with felt 7 or otherlmaterial. And thetelephone is assembled and held in assembled positionby means of three screws 8. To permit access to the screws and thuspermit repairrmen to disassemble the telephone, holes are provided inthefelt or other covering 7 for the base 2 Where the saidscrews 8 arelocated.

. The' device of my invention consists of a standard 9 made 'of anysuitable material., preferably .noneconducting material, suchv asnormally and yieldingly projected upwardly by means of a spring 13 whichbears against a collar 14 secured to the pin 12. rlhe spring also isseated against the bottom 15 of the base 9. When it is desired toutilize the ldevice in connection with a telephone system whereby thetelephone wires are available as a radio antenna or' as a vguide forcarrier current or wired wireless signals, the telephone stand is merelyplaced on the base 9. The pin 12 of the device of my invention comes incontact with thecenter screw 8 in the bottom of the base 2 of thetelephone standard 1 and is held in electrical contact therewith bymeans ofthe spring 13. All the electrical connection necessary for theefficient operation of the radio signaling apparatus employed inconnection with the system is thus eifected and obviously there is nopermanent or semi-permanent connection between two systems by reason ofthe employment of the device of my invention, and furthermore, there isno interaction of interference'between the two systems, either of whichbeing operably independent of the other, or both of them being operablesimultaneously. i

The end of the Wire cord 11 is provided -with some form of attachment,for example,

a tip 20 to facilitate attachment of the device` to the radio frequencysignaling apparatus. For the reception of signals it is attached to theusual terminal employed for connection with the antenna in a radioreceiving set, the rest of the equipment being that commonly employed inradio frequency signaling. Obviously the device may be eniployed fortransmission of radio frequency signals as well as reception. Also, lhave y found that the length'of the cord 11 may be varied within widelimits without aecting the eicient operation of the apparatus employed.

It may'sometimes be desirable to vary the capacity of condenser 10a, andconsequently in Figs. d and 5, I show a variable condenser of standardstructure in place of the ixed condenser 10, Variation of the capacityof the condenser is e'ected through a handle 'which extends through theside or peripheral wall of the body 9 through a slot provided for thatpurpose. @t course' it is obvious that any other type of variablecondenser 1. In a device of the character described,

avbody adapted to form a receptacle for the base of a telephoneinstrument, means carried by said body for effecting an electricalcontact with a metallic portion of the base of said instrument, a wireconnected with said means andv extending from said body,

and means included in said body for preventing low frequency' telephonecurrents from flowing through said wire connection.

2. ln a device of the character described, a body adapted to form areceptacle for the base of a telephone instrument, means carried by saidbody "for effecting an electrical contact with a metallic portion of thebase of said instrument, a wire connected withb said means and extendingfrom said body,-

and a condenser carried in said base and included in saidv wireconnection.

3. In a device of the character described, a body ladapted to formareceptacle for the base of a telephone instrument, means car-r ried bysaid body for effecting an electrical contact with a base screw of saidtelephone instrument, a wire connection with said means and extending.from said body, and means includedI in said body for preventing lowfrequency telephone currents from flowing through said wire connection.

4. In a device of the character described, a body adapted to form areceptacle for the base of a telephone instrument,.means carried by saidbody for eecting any electrical contact with a base screw of saidtelephone instrument, a wire connection with said means and extendingfrom said bodA and a 6. in a device of the character described,

a body adapted to form a receptacle for the base of atelephoneinstrument, a centrally disposed yieldable metallic pin carriedby said body for effecting an electrical `contact with a metallicportion of the base of said instrument, a wire connection with saidmeans and extending from said body, and a condenser carried in said baseand included in said wire connection.

7. In a device of the character described, a body adapted to form areceptacle for the base of a telephone instrument, a centrally disposedyieldable metallic pin carried by said body for effecting lan electricalcontact with the centrally positioned base screw of said instrument, awire connection with said pin extending from said body, and meansincluded in said body for preventing low frequency telephone currentsfrom flowing through said wire connection.

8. In a device of the character described, a body adapted to form areceptacle for the base yof a telephone instrument, a centrally disposedyieldable metallic pin carried |by said body for electing antelectricalcontact with the centrally positioned base screw of said instrument, awire connection with said pin extending from saidbody, and a condensercarried in--said base and included in said wire connection.I

9. In 'a device of the character described, a body adapted to beassociated with a telephone instrument without interference with thenormal operation thereof, means carried by s aidbody for electing anelectrical contact with a metallic portion of said instrument, a wireconnection with said means and extending from said body, la condenserincluded in said wire connection, and means` for varying the capacity ofsaid condenser.

. 10. In a device of the character described, a body adapted to form areceptacle for the base of a telephone instrument, means carried by saidbody for eliecting an electrical contact with a metallic portion of thebase ofy said instrument, a wire connected with said means and extending.from said body, a condenser carried in saidlbase and included in saidwire connection, and means for varying the capacity of'said condenser.

base of a telephone instrument, a centrally disposed yieldable metallicpin carried by said body for effecting an electrical contact with ametallic portion of the base `of said instrument., .a wire connectionwith said pin and extending from said body, a condenser carried in saidbase and included in said wire connection, and'means for varying thecapacity of said condenser.

13. .In a device of the character described, a body adapted to form areceptacle for the base of a telephone instrument, a centrally disposedyieldable metallic pin carried by said body for effecting. an electricalcontact with the centrally positioned base screw of said instrument, awire connection with said pin extending from said body, and meansincluded in said body for preventing low frequency telephone currentsfrom flowing through said Wire connection.

14. In a device of the character described, a body adapted to form areceptacle for the base of a telephone instrument, a centrally disposedyieldable metallic pin carried by said body for eiecting an electricalcontact with'the centrally positioned base screw of' 'said instrument, awire connection with said pin extending from said body, a condensercarried in said base and included in said Wire connection, and ineansIfor varying the capacity of said condenser.

In testimony whereofI have hereunto set nyohand on this 21st day of JuneA. D.,

GEORGE' OWEN SQUIER.

